MySQL 5.5客户端字符集有关参数
发布时间：2022-03-23 10:45:42 所属栏目：MySql教程 来源：互联网
导读：character_set_client 在客户端发出SQL语句所使用的字符集。 collation_connection 连接所使用的字符集校对规则 character_set_results 返回到客户端的查询结果集（例如查询结果或错误信息）所使用的字符集 character_set_connection The character set used
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character_set_client 在客户端发出SQL语句所使用的字符集。 collation_connection 连接所使用的字符集校对规则 character_set_results 返回到客户端的查询结果集（例如查询结果或错误信息）所使用的字符集 character_set_connection The character set used for literals that do not have a character set introducer and for number-to-string conversion --指定客户端当前会话使用的字符集 SET NAMES会同时更改character_set_client, character_set_connection,character_set_results这三个会话参数的字符集 mysql> set names utf8; Query OK, 0 rows affected (0.00 sec) mysql> show variables like '%character%'; +--------------------------+-----------------------+ | Variable_name | Value | +--------------------------+-----------------------+ | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | gbk | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | gbk | | character_set_system | utf8 | | character_sets_dir | /data/share/charsets/ | +--------------------------+-----------------------+ 8 rows in set (0.00 sec) SET CHARACTER SET会更改character_set_client、character_set_results，同时将character_set_connection设置为character_set_database这个系统参数的值 mysql> set character set latin2; Query OK, 0 rows affected (0.01 sec) mysql> show variables like '%character%'; +--------------------------+-----------------------+ | Variable_name | Value | +--------------------------+-----------------------+ | character_set_client | latin2 | | character_set_connection | gbk | | character_set_database | gbk | | character_set_filesystem | binary | | character_set_results | latin2 | | character_set_server | gbk | | character_set_system | utf8 | | character_sets_dir | /data/share/charsets/ | +--------------------------+-----------------------+ 8 rows in set (0.00 sec) （编辑：晋中站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
